CN209316156U - A kind of personalization astragalus surface replacement prosthesis - Google Patents
A kind of personalization astragalus surface replacement prosthesis Download PDFInfo
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- CN209316156U CN209316156U CN201821908431.8U CN201821908431U CN209316156U CN 209316156 U CN209316156 U CN 209316156U CN 201821908431 U CN201821908431 U CN 201821908431U CN 209316156 U CN209316156 U CN 209316156U
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- astragalus
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- joint face
- lower joint
- cast bar
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Abstract
The utility model discloses a kind of personalized astragalus surface replacement prosthesis, it is related to the field of medical instrument technology, including upper sliding surface and lower joint face, upper sliding surface is smooth dissection shape arc, match with distal tibial articular surface radian, prosthese complies fully with the astragalus surface anatomy shape of individual；Lower joint face is equipped with the pin of cast bar and two protrusions, and lower joint face is fixedly connected by cast bar and two pins with the top of the astragalus after osteotomy, provides incipient stability；The surface of lower joint face and cast bar is porous structure, has biological function, provides stable again, is grown convenient for prosthese and osteotomy surface rapid fusion.The utility model improves the stability of prosthese, realizes the biomechanical function for quickly repairing, rebuilding ankle-joint, mitigates patient suffering, reduces patient's deformity, disabled probability.
Description
Technical field
The utility model relates to the field of medical instrument technology more particularly to a kind of personalized astragalus surface replacement prosthesis.
Background technique
Artificial joint prosthesis is mainly used in the pain of ankle-joint caused by various wounds, autoimmune disease, degenerative disease
Bitterly, the patient that deformity, function are lost.For ankle-joint, currently used ankle fusion can be such that patient loses almost
The motor function of whole ankle-joints, ankle-joint replace the motor function that can retain most of ankle-joint, and thoroughly solve patient's
Pain and lopsided problem.Home and abroad patent consulting is not the results show that the design of existing astragalus prosthese is bionical to meet people completely
The real astragalus anatomical structure of body, biomethanics is also changed, and does not meet the characteristics of motion and feature under physiological conditions.
The geometry of prosthese provides prosthese-bone interface initial stability, and realizes that biology melts in Bone Ingrowth prosthese
It is provided when conjunction stable again.Existing prosthese is mostly single geometry, and incipient stability is poor；Existing prosthese by increase coating or
Porous structure is stable again to improve, but because astragalus is small in size, suffered stress is big, and individual astragalus trabecular bone structure is different,
The tibial astragaloid joint face matched of ankle-joint, in irregular shape, individual difference is big, it is stable not firm again to frequently result in, and occurs
Prosthetic loosening rate is high, has been more than half a century since the first generation manually full ankle-joint application, the stability of joint prosthesis with hold
Long property is always to limit the main factor of its development.And patient requires increasingly to increase for quality of life, so being closed for ankle
Section functional requirement is also increased therewith.Good stability, persistence and good function cannot be still provided in current ankle prosthesis
In the case where energy, the design and utility model for carrying out novel artificial ankle prosthesis can provide patient's preferably therapeutic modality,
Mitigate patient suffering, lowers patient's deformity, disabled probability, greatly improve the quality of life of patient.3D printing metal increases material system
Technology is made as a kind of novel prosthese manufacturing method, has been verified and has been successfully applied to biological intelligence manufacture, prosthese may be implemented
Personalized customization, complicated shape processing and multifunction.
Astragalus or other bones integrally remove displacement class operation the fusion growth of prosthese and other positions is generally used it is general
Logical porous structure can satisfy requirement, but the operation for astragalus surface replacement etc, for melting for postoperative prosthese and astragalus
The long requirement of symphysis is higher, higher to the requirement of astragalus surface replacement prosthesis, and the astragalus surface replacement prosthesis for needing one kind novel can
Preferably and astragalus fusion growth is to mitigate patient suffering, lowers patient's deformity, disabled probability, greatly improves the life of patient
Quality.
Utility model content
In view of this, both can be used as the purpose of the utility model is to provide a kind of personalized astragalus surface replacement prosthesis
One component of full ankle prosthesis, can also be used as the astragalus surface for not being related to being used alone when distal tibial and external malleolus disease and sets
Change prosthese.
The utility model solves above-mentioned technical problem by following technological means:
A kind of personalization astragalus surface replacement prosthesis, the shape and individual patients of the prosthese are by damage astragalus surface anatomy shape
Shape matches, and the prosthese includes upper sliding surface and lower joint face；
The upper sliding surface is smooth dissection shape arc and matches with distal tibial articular surface radian；
The lower joint face is equipped with the pin of cast bar and two protrusions, and the lower joint face passes through cast bar and two
Pin is fixedly connected with the top of the astragalus after osteotomy, offers tool on the lower joint face, on the surface of the cast bar
There is the porous structure of biological function, the layout and shape of the porous structure on the lower joint face and patient are by damage astragalus surface
The trabecular bone structure of concave and convex part accordingly matches.
The utility model carries out finite element analysis by the geometry to prosthese and experiment of machanics demonstrates the first of prosthese
Beginning stability difference, and carried out by the exemplar to 3D printing individuation astragalus trabecular bone structure and the exemplar of common porous structure
The biocompatibility experiment of in vitro and in vivo, it was demonstrated that the stability again of prosthese.
The experiment in vitro of the utility model is adherency, the increasing using mescenchymal stem cell on the exemplar of different porous structures
It grows, break up, the biological behaviours such as apoptosis, and observing, record the expression of its skeletonization coherent signal, to judge different porous structures
Bio-compatible implementations；Experiment in vivo is the astragalus neuropathy model by manufacturing goat, takes the prosthese of different porous structures
It is replaced, the difference of Bone Ingrowth is observed by Microct inspection and hard tissue slicing, to judge the life of different porous structures
The compatible implementations of object.The results show that the astragalus of individuation astragalus trabecular bone structure-prosthese interface Bone Ingrowth has advantage.
Further, the pin arrangement in equilateral triangle of the cast bar and two protrusions.
Further, the cast bar is hollow structure, and the marrow that the cast bar is used to reduce astragalus is lost.
Further, the porous structure is the micropore of net distribution, is interconnected between the adjacent micropore.Porous structure
It protrudes into for astragalus to be fixedly connected with prosthese by the astragalus bone trabecula for allowing astragalus newly to grow.
Further, the prosthese is made of cochrome.
Further, the prosthese is realized by 3D printing manufacturing technology.
The utility model has the beneficial effects that
The utility model is solved the problems, such as clinically to there is no astragalus surface replacement prosthesis, be overcome of the existing technology
The defect that full ankle prosthesis revision rate is high, loosening rate height is low with stability；The prosthese of the utility model both can be used as full ankle
It is false to can also be used as the astragalus surface replacement for not being related to being used alone when distal tibial and external malleolus disease for one component of articular prosthesis
Body；The utility model is fixedly connected by two pins and cast bar with the top of the astragalus after osteotomy, and the steady of prosthese is improved
Biomechanical function that is qualitative, realizing quick reparation, rebuild ankle-joint, mitigates patient suffering, and it is lopsided, deformity several to reduce patient
Rate.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram one of personalized astragalus surface replacement prosthesis of the utility model；
Fig. 2 is a kind of structural schematic diagram two of personalized astragalus surface replacement prosthesis of the utility model；
Fig. 3 is a kind of structural schematic diagram three of personalized astragalus surface replacement prosthesis of the utility model；
Fig. 4 is a kind of structural schematic diagram four of personalized astragalus surface replacement prosthesis of the utility model；
Fig. 5 is the osteoblast number statistical chart of experiment in vitro of the invention；
Fig. 6 is alkaline phosphatase (ALP) content statistical chart of experiment in vitro of the invention；
Wherein, upper sliding surface 1, lower joint face 2, pin 3, cast bar 4, porous structure 5, entity structure group A, bone trabecula are more
Pore structure group B, common porous structure group C.
Specific embodiment
The utility model is described in detail below with reference to the drawings and specific embodiments:
As Figure 1-Figure 4, a kind of personalized astragalus surface replacement prosthesis of the utility model, the shape of prosthese and patient
Individual is matched by damage astragalus surface anatomy shape, and prosthese is made of cochrome, and prosthese is realized by 3D printing manufacturing technology,
Prosthese includes upper sliding surface 1 and lower joint face 2；
Upper sliding surface 1 is smooth dissection shape arc and matches with distal tibial articular surface radian；
Lower joint face 2 is equipped with the pin 3 of cast bar 4 and two protrusions, and lower joint face 1 passes through cast bar 4 and two pins
Nail 3 is fixedly connected with the top of the astragalus after osteotomy, and cast bar 4 is used to be inserted into the ossis of astragalus, two pins 3 hammer into away from
In bone sclerotin, on lower joint face 2, the porous structure 5 with biological function, cast bar 4 are offered on the surface of cast bar 4
For hollow structure, the marrow that cast bar 4 is used to reduce astragalus is lost, and the pin 3 of cast bar 4 and two protrusions is in equilateral triangle
Arrangement, the stability connected between the top for enhancing the astragalus after prosthese and osteotomy.
Porous structure 5 is the micropore of net distribution, and the layout and shape of porous structure 5 and patient are by damage astragalus concave-convex surface
The trabecular bone structure at position accordingly matches, and the aperture of micropore is 800-1000 microns, is interconnected between adjacent cells, porous knot
Structure 5 protrudes into for astragalus to be fixedly connected with prosthese by the astragalus bone trabecula for allowing astragalus newly to grow.
Finite element analysis is carried out by the geometry to prosthese in the present embodiment and experiment of machanics demonstrates the first of prosthese
Beginning stability difference, and pass through the exemplar and common porous structure of the porous structure to 3D printing individuation astragalus trabecular bone structure
Exemplar carry out in vitro and in vivo biocompatibility experiment, it was demonstrated that the stability again of prosthese.
The experiment in vitro of the present embodiment is adherency, the increasing using mescenchymal stem cell on the exemplar of different porous structures
It grows, break up, the biological behaviours such as apoptosis, and observing, record the expression of its skeletonization coherent signal, to judge different porous structures
Bio-compatible implementations；Experiment in vivo is the astragalus neuropathy model by manufacturing goat, takes the prosthese of different porous structures
It is replaced, the difference of Bone Ingrowth is observed by Microct inspection and hard tissue slicing, to judge the life of different porous structures
The compatible implementations of object.The results show that the astragalus of the porous structure of individuation astragalus trabecular bone structure-prosthese interface Bone Ingrowth has
It is advantageous.
The stability again of bone and prosthese relies primarily on growing into for bone, and prosthese and bone fusion are integrated, and osteoblast is into
The main cell of bone, alkaline phosphatase (ALP) etc. facilitate the relevant factor pair skeletonization adjustment effect of bone；Osteoblast is more, promotees
Factor content into skeletonization is higher, and skeletonization is more obvious.
It is tested in vitro referring to Fig. 5 to measure the prosthese of different porous structure structures and the bio-compatible implementations of astragalus
In set three kinds of prostheses and do comparative experiments, be respectively as follows: entity structure group A, bone trabecula porous structure group B, common porous structure
Prosthese in group C, entity structure group A does not open up porous structure on lower joint face 2, on the surface of cast bar 4, and bone trabecula is more
Prosthese in pore structure group B on lower joint face 2, offer on the surface of cast bar 4 and match with astragalus trabecular bone structure
Porous structure, the prosthese in common porous structure group C offers general knot on lower joint face 2, on the surface of cast bar 4
The porous structure of structure, in figure 5 it can be seen that the osteoclast number in bone trabecula porous structure group B is obviously than other more than two groups.
It is the alkaline phosphatase of the experiment in vitro of personalized astragalus surface replacement prosthesis in the present embodiment referring to Fig. 6, Fig. 6
(ALP) content statistical chart, in figure 5 it can be seen that the skeletonization correlation factor ALP content of bone trabecula porous structure group B is obviously than other two groups
It is high.
Therefore, referring to figure 5 and figure 6 it can be proved that astragalus-prosthese circle of the porous structure of individuation astragalus trabecular bone structure
The Bone Ingrowth in face has advantage, and the stability again of bone and prosthese is more preferable.
Above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although referring to preferred embodiment pair
The utility model is described in detail, those skilled in the art should understand that, it can be to the technology of the utility model
Scheme is modified or replaced equivalently, and without departing from the objective and range of technical solutions of the utility model, should all be covered
In the scope of the claims of the utility model.Technology that the utility model is not described in detail, shape, construction portion are known
Technology.
Claims (4)
1. a kind of personalization astragalus surface replacement prosthesis, it is characterised in that: the shape and individual patients of the prosthese are by damage astragalus
Surface anatomy shape matches, and the prosthese includes upper sliding surface and lower joint face；
The upper sliding surface is smooth dissection shape arc and matches with distal tibial articular surface radian；
The lower joint face is equipped with the pin of cast bar and two protrusions, and the lower joint face passes through cast bar and two pins
It is fixedly connected with the top of the astragalus after osteotomy, offering on the lower joint face, on the surface of the cast bar has life
The porous structure of object function, the layout and shape of the porous structure on the lower joint face and patient are by damage astragalus concave-convex surface
The trabecular bone structure at position accordingly matches.
2. a kind of personalized astragalus surface replacement prosthesis according to claim 1, it is characterised in that；The cast bar and two
The arrangement in equilateral triangle of the pin of a protrusion.
3. a kind of personalized astragalus surface replacement prosthesis according to claim 2, it is characterised in that: during the cast bar is
Hollow structure, the marrow that the cast bar is used to reduce astragalus are lost.
4. a kind of personalized astragalus surface replacement prosthesis according to claim 1, it is characterised in that: the porous structure is
The micropore of net distribution is interconnected between the adjacent micropore.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821908431.8U CN209316156U (en) | 2018-11-20 | 2018-11-20 | A kind of personalization astragalus surface replacement prosthesis |
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| CN201821908431.8U CN209316156U (en) | 2018-11-20 | 2018-11-20 | A kind of personalization astragalus surface replacement prosthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022040623A1 (en) * | 2020-08-21 | 2022-02-24 | Paragon Advanced Technologies, Inc. | Implant for focal talus defects and method |
-
2018
- 2018-11-20 CN CN201821908431.8U patent/CN209316156U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022040623A1 (en) * | 2020-08-21 | 2022-02-24 | Paragon Advanced Technologies, Inc. | Implant for focal talus defects and method |
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